Combination water filter tank

Abstract

A combination water filter tank, which includes a rectangular housing, three transverse partition boards disposed in the housing and defining a first sedimentation chamber, a second sedimentation chamber, a third sedimentation chamber and a fourth sedimentation chamber, a water inlet for guiding water from an external water source into the first sedimentation chamber, a plurality of first longitudinal partition boards of different heights respectively disposed in the first sedimentation chamber, three L-shaped water guide boards respectively suspended in the second sedimentation chamber, third sedimentation chamber and fourth sedimentation chamber, a plurality of second longitudinal partition boards respectively disposed in the second sedimentation chamber, third sedimentation chamber and fourth sedimentation chamber on the middle at an elevation below the L-shaped water guide boards, and a water outlet for guiding water out of the fourth sedimentation chamber.

What the invention claimed is: 
     
       1. A combination water filter tank comprising a rectangular housing, three transverse partition boards disposed in said housing and defining a first sedimentation chamber, a second sedimentation chamber, a third sedimentation chamber and a fourth sedimentation chamber, a water inlet for guiding water from an external water source into said first sedimentation chamber for enabling intake flow of water to flow from said first sedimentation chamber toward said fourth sedimentation chamber through said second sedimentation chamber and said third sedimentation chamber, a plurality of first longitudinal partition boards of different heights respectively disposed in said first sedimentation chamber, three L-shaped water guide boards respectively suspended in said second sedimentation chamber, third sedimentation chamber and fourth sedimentation chamber, a plurality of second longitudinal partition boards respectively disposed in said second sedimentation chamber, third sedimentation chamber and fourth sedimentation chamber on the middle at an elevation below said L-shaped water guide boards, and a water outlet for guiding water out of said fourth sedimentation chamber. 
     
     
       2. The combination water filter tank of claim 1 wherein said sedimentation chambers each comprise a bottom wall, and at least one drain hole on said bottom wall for guiding sediment out of said housing, said bottom wall being curved inwards toward said at least one drain hole.